pp. 471-477
S&M940 Research Paper of Special Issue https://doi.org/10.18494/SAM.2013.859 Published: September 24, 2013 Development of New Oxygen Sensor by Microfabrication of Single-Crystal CuFeTe2 Thin Films [PDF] Masatoshi Kozaki, Yuichiro Higuchi, Akihiro Ikeda, Hisao Kuriyaki and Kiyoshi Toko (Received October 11, 2012; Accepted December 27, 2012) Keywords: oxygen, gas sensor, intercalation, layered material, microfabrication
A new oxygen sensor based on resistance change caused by oxygen intercalation for the layered compound CuFeTe2 (CFT) was developed. A microfabrication process for forming many fine pores on the surface of single-crystal CFT thin films by performing wet etching using photolithography was developed with the aim of reducing the response time of the oxygen sensor. A reproducible response of the fabricated samples to oxygen gas was confirmed when 20% oxygen gas and nitrogen gas were alternately introduced into the sample chamber. The microfabricated sample of the single-crystal CFT thin films showed a response time of 2.5 min to 20% oxygen gas, approximately 34% of that of the single-crystal CFT thin films without fine pores.
Corresponding author: Masatoshi KozakiCite this article Masatoshi Kozaki, Yuichiro Higuchi, Akihiro Ikeda, Hisao Kuriyaki and Kiyoshi Toko, Development of New Oxygen Sensor by Microfabrication of Single-Crystal CuFeTe2 Thin Films, Sens. Mater., Vol. 25, No. 7, 2013, p. 471-477. |